Basic statistics
t-test
Compare two means: two independent groups, the same units measured twice, or one sample against a fixed value.
Data format
Two columns with names in the first row (one column for a one-sample test). Independent groups may have different sizes.
Variety A, Variety B 42.1, 45.3 39.8, 47.0 41.5, 44.2
You get
- Group statistics and the mean difference with its 95% confidence interval
- Levene's test with both the Student and the Welch t-test
- Paired and one-sample t-tests, with Cohen's d
Downloads as Excel, PDF and Word.
Type of t-test
Enter data
Variable names in the first row, then one row per observation (as in Excel or SPSS). A first column of labels such as P1, P2 is ignored.
or drag and drop here